Traditional methods for cleaning heat exchangers mainly include manual cleaning and chemical cleaning. However, manual cleaning of heat exchangers has drawbacks such as low efficiency, poor results, and high labor intensity. While chemical cleaning yields good results, it is less efficient and the resulting chemical waste is difficult to dispose of, which can also corrode the equipment and pollute the environment.

High-pressure washers are a type of innovative cleaning equipment that has seen rapid development in recent years. Their applications are extremely versatile, covering nearly all industrial cleaning fields. Especially in the context of China's increasingly stringent environmental protection requirements, zero-pollution high-pressure washers have gained favor among numerous enterprises for their environmental-friendly nature. This equipment boasts excellent cleaning quality, low cleaning costs, high efficiency, environmental friendliness, high safety, and a wide range of applications, and has now become a standard cleaning tool in the heat exchanger cleaning industry. Heat exchanger cleaning is primarily divided into tube side and shell side cleaning. Shell side cleaning usually involves manually using a high-pressure nozzle gun or placing the nozzle on a device fed by a robotic arm, aiming the nozzle at the gaps between tubes, moving the device while cleaning the scale between the tubes along the longitudinal direction until all the gaps are thoroughly cleaned, thus completing the shell side cleaning. Tube side cleaning first involves removing the heat exchanger's head and tail, exposing all the tubes, followed by inserting a rigid nozzle or flexible high-pressure nozzle into the tube holes.Maintain a distance of 200-300mm, open the nozzle control valve to increase the pressure of the high-pressure water to the rated pressure. Subsequently, during the cleaning process, gradually advance the nozzle towards the deeper part of the pipeline until the high-pressure water jet exits from the other end of the heat exchanger.

Subsequently, the operator will slowly withdraw the spray gun while it's in operation, allowing the debris to continue being broken up until the gun is pulled back to the original pipe opening, at which point the debris is also gradually discharged from the pipe. Afterward, the same method is used to clean each individual tube, until the entire tube side of the heat exchanger is thoroughly cleaned. Generally, the following methods are employed for cleaning the interior walls of the tubes: